Before you make the jump to the Rockpool by Eddyline, be sure that you give the boat a thorough tryout. The things it was designed to do, it does very well, but if you plan to push the boat a bit, you might want to compare how easily it paddles to your present boat.
I'm not saying the boat is slow, but it definitely seems to squat in the stern when you pick up the pace. It felt like it hits a wall and the effort to keep it cooking is considerable. By comparison, the Fathom felt like it took less effort to maintain a faster pace. And don't take that to mean that I thought the Fathom was actually faster just didn't seem to take as much effort.
Good points... I have a GPS but I never bother to check my speed with the Fathom as that just seems a little too anal and besides the point. Anyhow with the Fathom LV I seem to hit that wall (or hull speed) that you mention at what seems to be a modest clip. I would certainly expect the RockPool to be quicker but then without making measurements, who knows? So maybe this Tuesday I will take out my trusty GPS and measure my cruising and max speeds with both boats.
And maybe that stern squat you mention is something that could be adjusted by moving the seat a little forward?
One thing that gets me with the Fathom and the relatively high coaming is that water pools in my spray skirt around my waist and is pretty annoying... it also tends to work into the cockpit (Seals Extreme Tour neoprene with a breathable waist section). After around 10 to 15 rolls I had to stop and use the pump before continuing. I suspect that the lower fit of the RP may help prevent that.
Anyhow, if I do bother to get out the GPS, I'll report back with the numbers.
Oh, also Evergreen is planning on carrying TideRace, which carries on the RockPool DNA. But I do like thermoformed materials for kayak construction. It's really nice to not be concerned over the occasional rock encounter. The Fathom hull has 'kissed' many bits of Canadian shield over the past couple of years and is none the worse for it.